and another utility (also freeware) HD Tune is a hard disk utility which has the following functions: Benchmark: measures the raw performance Transfer Rate Access Time CPU Usage Burst Rate Hard Disk information which includes partition information, supported features, firmware version, serial number, disk capacity, buffer size, transfer mode Hard Disk Health S.M.A.R.T. Information (Self-Monitoring Analysis and Reporting Technology) Power On Time Error scan Temperature display Copy text to clipboard Copy screenshot to clipboard http://www.hdtune.com/ For those not caring to instal the program, the results people have had from various hard drives hace been posted here - a nice reference page if you're intending to buy a new hard drive http://www.hdtune.com/testresults.html karl